在片段中我有一个按钮,当我按下按钮时,我想执行通话。
但是,当我单击按钮时,似乎什么都没发生,这是我在做什么错?
这是我的片段代码:
package fr.aitec_informatique.aitecinformatiques;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.content.Context;
import android.widget.ListView;
/**
* A simple {@link Fragment} subclass.
*/
public class HomeFragment extends Fragment {
Button dial;
private Context mContext;
public HomeFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_home, container, false);
v.findViewById(R.id.dial);
return v;
}
public void onDialButton(View v) {
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:xxxxxxxxxx"));
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
return;
}
startActivity(intent);
}
}
答案 0 :(得分:0)
像这样初始化Button
:
dial = v.findViewById(R.id.dial);
可能是您没有正确定义Button
。 getActivity()
实际上有效。
此外,onDialButton
从未使用过。而是将监听器添加到Button
中,然后调用onDialButton
:
dial.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
onDialButton();
}
});
更新:
您现在应该使用ContextCompat.checkSelfPermission
:
public void onDialButton() {
if (ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
// Permission is not granted
}
// first check for the permission
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:xxxxxxxxxx"));
startActivity(intent);
}
然后只需在您的onDialButton()
中呼叫onClick()
。
阅读文档:https://developer.android.com/training/permissions/requesting#java
答案 1 :(得分:0)
我认为您使用的不是普通的OnClickListener
。
尝试一下:
public class HomeFragment extends Fragment {
Button dial;
private Context mContext;
public HomeFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_home, container, false);
dial = (Button)v.findViewById(R.id.dial);
//I think dial is the id of your button
dial.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
onDialButton();
}
});
return v;
}
public void onDialButton() {
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:xxxxxxxxxx"));
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
return;
}
startActivity(intent);
}
}